Clock



FIG. 1 is a front plan view of a clock showing my new design;

FIG. 2 is a left side elevation view thereof;

FIG. 3 is a right side elevation view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a front plan view of a second embodiment thereof;

FIG. 7 is a front plan view of a third embodiment thereof;

FIG. 8 is a front plan view of an fourth embodiment thereof;

FIG. 9 is a front plan view of a fifth embodiment thereof; and,

FIG. 10 is a front plan view of a sixth embodiment thereof.

The rear of each embodiment is flat and unornamented. 

The ornamental design for a clock, as shown and described. 